1 /* Multiple source language support for GDB.
2 Copyright 1991, 1992, 2000 Free Software Foundation, Inc.
3 Contributed by the Department of Computer Science at the State University
4 of New York at Buffalo.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* This file contains functions that return things that are specific
24 to languages. Each function should examine current_language if necessary,
25 and return the appropriate result. */
27 /* FIXME: Most of these would be better organized as macros which
28 return data out of a "language-specific" struct pointer that is set
29 whenever the working language changes. That would be a lot faster. */
33 #include "gdb_string.h"
40 #include "expression.h"
43 #include "parser-defs.h"
45 extern void _initialize_language
PARAMS ((void));
48 show_language_command
PARAMS ((char *, int));
51 set_language_command
PARAMS ((char *, int));
54 show_type_command
PARAMS ((char *, int));
57 set_type_command
PARAMS ((char *, int));
60 show_range_command
PARAMS ((char *, int));
63 set_range_command
PARAMS ((char *, int));
66 set_range_str
PARAMS ((void));
69 set_type_str
PARAMS ((void));
72 set_lang_str
PARAMS ((void));
75 unk_lang_error
PARAMS ((char *));
78 unk_lang_parser
PARAMS ((void));
81 show_check
PARAMS ((char *, int));
84 set_check
PARAMS ((char *, int));
87 set_type_range
PARAMS ((void));
89 static void unk_lang_emit_char (int c
, struct ui_file
*stream
, int quoter
);
91 static void unk_lang_printchar (int c
, struct ui_file
*stream
);
93 static void unk_lang_printstr (struct ui_file
* stream
, char *string
,
94 unsigned int length
, int width
,
98 unk_lang_create_fundamental_type
PARAMS ((struct objfile
*, int));
100 static void unk_lang_print_type (struct type
*, char *, struct ui_file
*,
103 static int unk_lang_val_print (struct type
*, char *, int, CORE_ADDR
,
104 struct ui_file
*, int, int, int,
105 enum val_prettyprint
);
107 static int unk_lang_value_print (value_ptr
, struct ui_file
*, int, enum val_prettyprint
);
109 /* Forward declaration */
110 extern const struct language_defn unknown_language_defn
;
111 extern char *warning_pre_print
;
113 /* The current (default at startup) state of type and range checking.
114 (If the modes are set to "auto", though, these are changed based
115 on the default language at startup, and then again based on the
116 language of the first source file. */
118 enum range_mode range_mode
= range_mode_auto
;
119 enum range_check range_check
= range_check_off
;
120 enum type_mode type_mode
= type_mode_auto
;
121 enum type_check type_check
= type_check_off
;
123 /* The current language and language_mode (see language.h) */
125 const struct language_defn
*current_language
= &unknown_language_defn
;
126 enum language_mode language_mode
= language_mode_auto
;
128 /* The language that the user expects to be typing in (the language
129 of main(), or the last language we notified them about, or C). */
131 const struct language_defn
*expected_language
;
133 /* The list of supported languages. The list itself is malloc'd. */
135 static const struct language_defn
**languages
;
136 static unsigned languages_size
;
137 static unsigned languages_allocsize
;
138 #define DEFAULT_ALLOCSIZE 4
140 /* The "set language/type/range" commands all put stuff in these
141 buffers. This is to make them work as set/show commands. The
142 user's string is copied here, then the set_* commands look at
143 them and update them to something that looks nice when it is
146 static char *language
;
150 /* Warning issued when current_language and the language of the current
151 frame do not match. */
152 char lang_frame_mismatch_warn
[] =
153 "Warning: the current language does not match this frame.";
156 /* This page contains the functions corresponding to GDB commands
157 and their helpers. */
159 /* Show command. Display a warning if the language set
160 does not match the frame. */
162 show_language_command (ignore
, from_tty
)
166 enum language flang
; /* The language of the current frame */
168 flang
= get_frame_language ();
169 if (flang
!= language_unknown
&&
170 language_mode
== language_mode_manual
&&
171 current_language
->la_language
!= flang
)
172 printf_filtered ("%s\n", lang_frame_mismatch_warn
);
175 /* Set command. Change the current working language. */
177 set_language_command (ignore
, from_tty
)
185 if (!language
|| !language
[0])
187 printf_unfiltered ("The currently understood settings are:\n\n");
188 printf_unfiltered ("local or auto Automatic setting based on source file\n");
190 for (i
= 0; i
< languages_size
; ++i
)
192 /* Already dealt with these above. */
193 if (languages
[i
]->la_language
== language_unknown
194 || languages
[i
]->la_language
== language_auto
)
197 /* FIXME for now assume that the human-readable name is just
198 a capitalization of the internal name. */
199 printf_unfiltered ("%-16s Use the %c%s language\n",
200 languages
[i
]->la_name
,
201 /* Capitalize first letter of language
203 toupper (languages
[i
]->la_name
[0]),
204 languages
[i
]->la_name
+ 1);
206 /* Restore the silly string. */
207 set_language (current_language
->la_language
);
211 /* Search the list of languages for a match. */
212 for (i
= 0; i
< languages_size
; i
++)
214 if (STREQ (languages
[i
]->la_name
, language
))
216 /* Found it! Go into manual mode, and use this language. */
217 if (languages
[i
]->la_language
== language_auto
)
219 /* Enter auto mode. Set to the current frame's language, if known. */
220 language_mode
= language_mode_auto
;
221 flang
= get_frame_language ();
222 if (flang
!= language_unknown
)
223 set_language (flang
);
224 expected_language
= current_language
;
229 /* Enter manual mode. Set the specified language. */
230 language_mode
= language_mode_manual
;
231 current_language
= languages
[i
];
234 expected_language
= current_language
;
240 /* Reset the language (esp. the global string "language") to the
242 err_lang
= savestring (language
, strlen (language
));
243 make_cleanup (free
, err_lang
); /* Free it after error */
244 set_language (current_language
->la_language
);
245 error ("Unknown language `%s'.", err_lang
);
248 /* Show command. Display a warning if the type setting does
249 not match the current language. */
251 show_type_command (ignore
, from_tty
)
255 if (type_check
!= current_language
->la_type_check
)
257 "Warning: the current type check setting does not match the language.\n");
260 /* Set command. Change the setting for type checking. */
262 set_type_command (ignore
, from_tty
)
266 if (STREQ (type
, "on"))
268 type_check
= type_check_on
;
269 type_mode
= type_mode_manual
;
271 else if (STREQ (type
, "warn"))
273 type_check
= type_check_warn
;
274 type_mode
= type_mode_manual
;
276 else if (STREQ (type
, "off"))
278 type_check
= type_check_off
;
279 type_mode
= type_mode_manual
;
281 else if (STREQ (type
, "auto"))
283 type_mode
= type_mode_auto
;
285 /* Avoid hitting the set_type_str call below. We
286 did it in set_type_range. */
291 warning ("Unrecognized type check setting: \"%s\"", type
);
294 show_type_command ((char *) NULL
, from_tty
);
297 /* Show command. Display a warning if the range setting does
298 not match the current language. */
300 show_range_command (ignore
, from_tty
)
305 if (range_check
!= current_language
->la_range_check
)
307 "Warning: the current range check setting does not match the language.\n");
310 /* Set command. Change the setting for range checking. */
312 set_range_command (ignore
, from_tty
)
316 if (STREQ (range
, "on"))
318 range_check
= range_check_on
;
319 range_mode
= range_mode_manual
;
321 else if (STREQ (range
, "warn"))
323 range_check
= range_check_warn
;
324 range_mode
= range_mode_manual
;
326 else if (STREQ (range
, "off"))
328 range_check
= range_check_off
;
329 range_mode
= range_mode_manual
;
331 else if (STREQ (range
, "auto"))
333 range_mode
= range_mode_auto
;
335 /* Avoid hitting the set_range_str call below. We
336 did it in set_type_range. */
341 warning ("Unrecognized range check setting: \"%s\"", range
);
344 show_range_command ((char *) 0, from_tty
);
347 /* Set the status of range and type checking based on
348 the current modes and the current language.
349 If SHOW is non-zero, then print out the current language,
350 type and range checking status. */
355 if (range_mode
== range_mode_auto
)
356 range_check
= current_language
->la_range_check
;
358 if (type_mode
== type_mode_auto
)
359 type_check
= current_language
->la_type_check
;
365 /* Set current language to (enum language) LANG. Returns previous language. */
372 enum language prev_language
;
374 prev_language
= current_language
->la_language
;
376 for (i
= 0; i
< languages_size
; i
++)
378 if (languages
[i
]->la_language
== lang
)
380 current_language
= languages
[i
];
387 return prev_language
;
390 /* This page contains functions that update the global vars
391 language, type and range. */
398 if (language_mode
== language_mode_auto
)
399 prefix
= "auto; currently ";
401 language
= concat (prefix
, current_language
->la_name
, NULL
);
407 char *tmp
= NULL
, *prefix
= "";
410 if (type_mode
== type_mode_auto
)
411 prefix
= "auto; currently ";
421 case type_check_warn
:
425 error ("Unrecognized type check setting.");
428 type
= concat (prefix
, tmp
, NULL
);
434 char *tmp
, *pref
= "";
436 if (range_mode
== range_mode_auto
)
437 pref
= "auto; currently ";
444 case range_check_off
:
447 case range_check_warn
:
451 error ("Unrecognized range check setting.");
455 range
= concat (pref
, tmp
, NULL
);
459 /* Print out the current language settings: language, range and
460 type checking. If QUIETLY, print only what has changed. */
463 language_info (quietly
)
466 if (quietly
&& expected_language
== current_language
)
469 expected_language
= current_language
;
470 printf_unfiltered ("Current language: %s\n", language
);
471 show_language_command ((char *) 0, 1);
475 printf_unfiltered ("Type checking: %s\n", type
);
476 show_type_command ((char *) 0, 1);
477 printf_unfiltered ("Range checking: %s\n", range
);
478 show_range_command ((char *) 0, 1);
482 /* Return the result of a binary operation. */
484 #if 0 /* Currently unused */
487 binop_result_type (v1
, v2
)
491 struct type
*t1
= check_typedef (VALUE_TYPE (v1
));
492 struct type
*t2
= check_typedef (VALUE_TYPE (v2
));
494 int l1
= TYPE_LENGTH (t1
);
495 int l2
= TYPE_LENGTH (t2
);
497 switch (current_language
->la_language
)
501 if (TYPE_CODE (t1
) == TYPE_CODE_FLT
)
502 return TYPE_CODE (t2
) == TYPE_CODE_FLT
&& l2
> l1
?
503 VALUE_TYPE (v2
) : VALUE_TYPE (v1
);
504 else if (TYPE_CODE (t2
) == TYPE_CODE_FLT
)
505 return TYPE_CODE (t1
) == TYPE_CODE_FLT
&& l1
> l2
?
506 VALUE_TYPE (v1
) : VALUE_TYPE (v2
);
507 else if (TYPE_UNSIGNED (t1
) && l1
> l2
)
508 return VALUE_TYPE (v1
);
509 else if (TYPE_UNSIGNED (t2
) && l2
> l1
)
510 return VALUE_TYPE (v2
);
511 else /* Both are signed. Result is the longer type */
512 return l1
> l2
? VALUE_TYPE (v1
) : VALUE_TYPE (v2
);
515 /* If we are doing type-checking, l1 should equal l2, so this is
517 return l1
> l2
? VALUE_TYPE (v1
) : VALUE_TYPE (v2
);
520 error ("Missing Chill support in function binop_result_check."); /*FIXME */
523 return (struct type
*) 0; /* For lint */
529 /* This page contains functions that return format strings for
530 printf for printing out numbers in different formats */
532 /* Returns the appropriate printf format for hexadecimal
535 local_hex_format_custom (pre
)
538 static char form
[50];
540 strcpy (form
, local_hex_format_prefix ());
543 strcat (form
, local_hex_format_specifier ());
544 strcat (form
, local_hex_format_suffix ());
548 /* Converts a number to hexadecimal (without leading "0x") and stores it in a
549 static string. Returns a pointer to this string. */
552 longest_raw_hex_string (num
)
555 static char res_longest_raw_hex_string
[50];
556 long long ll
= num
; /* MERGEBUG ?? see below */
557 res_longest_raw_hex_string
[0] = 0;
558 /* MERGEBUG ?? As a quick fix I am replacing this with sprintf
559 strcat_address_numeric (num, 0, res_longest_raw_hex_string, 50);
562 sprintf (res_longest_raw_hex_string
, "%llx", ll
);
563 return res_longest_raw_hex_string
;
566 /* Converts a number to hexadecimal and stores it in a static
567 string. Returns a pointer to this string. */
569 local_hex_string (num
)
574 sprintf (res
, local_hex_format (), num
);
578 /* Converts a LONGEST number to hexadecimal and stores it in a static
579 string. Returns a pointer to this string. */
581 longest_local_hex_string (num
)
584 return longest_local_hex_string_custom (num
, "l");
587 /* Converts a number to custom hexadecimal and stores it in a static
588 string. Returns a pointer to this string. */
590 local_hex_string_custom (num
, pre
)
596 sprintf (res
, local_hex_format_custom (pre
), num
);
600 /* Converts a LONGEST number to custom hexadecimal and stores it in a static
601 string. Returns a pointer to this string. Note that the width parameter
602 should end with "l", e.g. "08l" as with calls to local_hex_string_custom */
605 longest_local_hex_string_custom (num
, width
)
609 #define RESULT_BUF_LEN 50
610 static char res2
[RESULT_BUF_LEN
];
611 char format
[RESULT_BUF_LEN
];
612 #if !defined (PRINTF_HAS_LONG_LONG)
616 char *pad_char
; /* string with one character */
619 char temp_nbr_buf
[RESULT_BUF_LEN
];
622 #ifndef CC_HAS_LONG_LONG
623 /* If there is no long long, then LONGEST should be just long and we
624 can use local_hex_string_custom
626 return local_hex_string_custom ((unsigned long) num
, width
);
629 #if defined (PRINTF_HAS_LONG_LONG)
630 /* Just use printf. */
631 strcpy (format
, local_hex_format_prefix ()); /* 0x */
632 strcat (format
, "%");
633 strcat (format
, width
); /* e.g. "08l" */
634 strcat (format
, "l"); /* need "ll" for long long */
635 strcat (format
, local_hex_format_specifier ()); /* "x" */
636 strcat (format
, local_hex_format_suffix ()); /* "" */
637 sprintf (res2
, format
, num
);
639 #else /* !defined (PRINTF_HAS_LONG_LONG) */
640 /* Use strcat_address_numeric to print the number into a string, then
641 build the result string from local_hex_format_prefix, padding and
642 the hex representation as indicated by "width". */
645 /* With use_local == 0, we don't get the leading "0x" prefix. */
646 /* MERGEBUG ?? As a quick fix I am replacing this call to
647 strcat_address_numeric with sprintf
648 strcat_address_numeric(num, 0, temp_nbr_buf, RESULT_BUF_LEN);
653 sprintf (temp_nbr_buf
, "%llx", ll
);
659 if (*parse_ptr
== '-')
664 if (*parse_ptr
== '0')
668 pad_char
= "0"; /* If padding is on the right, it is blank */
670 field_width
= atoi (parse_ptr
);
671 num_len
= strlen (temp_nbr_buf
);
672 num_pad_chars
= field_width
- strlen (temp_nbr_buf
); /* possibly negative */
674 if (strlen (local_hex_format_prefix ()) + num_len
+ num_pad_chars
675 < RESULT_BUF_LEN
) /* paranoia */
676 internal_error ("longest_local_hex_string_custom: insufficient space to store result");
678 strcpy (res2
, local_hex_format_prefix ());
681 while (num_pad_chars
> 0)
683 strcat (res2
, pad_char
);
687 strcat (res2
, temp_nbr_buf
);
690 while (num_pad_chars
> 0)
692 strcat (res2
, pad_char
);
699 } /* longest_local_hex_string_custom */
701 /* Returns the appropriate printf format for octal
704 local_octal_format_custom (pre
)
707 static char form
[50];
709 strcpy (form
, local_octal_format_prefix ());
712 strcat (form
, local_octal_format_specifier ());
713 strcat (form
, local_octal_format_suffix ());
717 /* Returns the appropriate printf format for decimal numbers. */
719 local_decimal_format_custom (pre
)
722 static char form
[50];
724 strcpy (form
, local_decimal_format_prefix ());
727 strcat (form
, local_decimal_format_specifier ());
728 strcat (form
, local_decimal_format_suffix ());
733 /* This page contains functions that are used in type/range checking.
734 They all return zero if the type/range check fails.
736 It is hoped that these will make extending GDB to parse different
737 languages a little easier. These are primarily used in eval.c when
738 evaluating expressions and making sure that their types are correct.
739 Instead of having a mess of conjucted/disjuncted expressions in an "if",
740 the ideas of type can be wrapped up in the following functions.
742 Note that some of them are not currently dependent upon which language
743 is currently being parsed. For example, floats are the same in
744 C and Modula-2 (ie. the only floating point type has TYPE_CODE of
745 TYPE_CODE_FLT), while booleans are different. */
747 /* Returns non-zero if its argument is a simple type. This is the same for
748 both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur,
749 and thus will never cause the failure of the test. */
754 CHECK_TYPEDEF (type
);
755 switch (TYPE_CODE (type
))
761 case TYPE_CODE_RANGE
:
770 /* Returns non-zero if its argument is of an ordered type.
771 An ordered type is one in which the elements can be tested for the
772 properties of "greater than", "less than", etc, or for which the
773 operations "increment" or "decrement" make sense. */
778 CHECK_TYPEDEF (type
);
779 switch (TYPE_CODE (type
))
785 case TYPE_CODE_RANGE
:
793 /* Returns non-zero if the two types are the same */
795 same_type (arg1
, arg2
)
796 struct type
*arg1
, *arg2
;
798 CHECK_TYPEDEF (type
);
799 if (structured_type (arg1
) ? !structured_type (arg2
) : structured_type (arg2
))
800 /* One is structured and one isn't */
802 else if (structured_type (arg1
) && structured_type (arg2
))
804 else if (numeric_type (arg1
) && numeric_type (arg2
))
805 return (TYPE_CODE (arg2
) == TYPE_CODE (arg1
)) &&
806 (TYPE_UNSIGNED (arg1
) == TYPE_UNSIGNED (arg2
))
812 /* Returns non-zero if the type is integral */
817 CHECK_TYPEDEF (type
);
818 switch (current_language
->la_language
)
822 return (TYPE_CODE (type
) != TYPE_CODE_INT
) &&
823 (TYPE_CODE (type
) != TYPE_CODE_ENUM
) ? 0 : 1;
825 return TYPE_CODE (type
) != TYPE_CODE_INT
? 0 : 1;
827 error ("Missing Chill support in function integral_type."); /*FIXME */
829 error ("Language not supported.");
833 /* Returns non-zero if the value is numeric */
838 CHECK_TYPEDEF (type
);
839 switch (TYPE_CODE (type
))
850 /* Returns non-zero if the value is a character type */
852 character_type (type
)
855 CHECK_TYPEDEF (type
);
856 switch (current_language
->la_language
)
860 return TYPE_CODE (type
) != TYPE_CODE_CHAR
? 0 : 1;
864 return (TYPE_CODE (type
) == TYPE_CODE_INT
) &&
865 TYPE_LENGTH (type
) == sizeof (char)
872 /* Returns non-zero if the value is a string type */
877 CHECK_TYPEDEF (type
);
878 switch (current_language
->la_language
)
882 return TYPE_CODE (type
) != TYPE_CODE_STRING
? 0 : 1;
886 /* C does not have distinct string type. */
893 /* Returns non-zero if the value is a boolean type */
898 CHECK_TYPEDEF (type
);
899 if (TYPE_CODE (type
) == TYPE_CODE_BOOL
)
901 switch (current_language
->la_language
)
905 /* Might be more cleanly handled by having a TYPE_CODE_INT_NOT_BOOL
906 for CHILL and such languages, or a TYPE_CODE_INT_OR_BOOL for C. */
907 if (TYPE_CODE (type
) == TYPE_CODE_INT
)
915 /* Returns non-zero if the value is a floating-point type */
920 CHECK_TYPEDEF (type
);
921 return TYPE_CODE (type
) == TYPE_CODE_FLT
;
924 /* Returns non-zero if the value is a pointer type */
929 return TYPE_CODE (type
) == TYPE_CODE_PTR
||
930 TYPE_CODE (type
) == TYPE_CODE_REF
;
933 /* Returns non-zero if the value is a structured type */
935 structured_type (type
)
938 CHECK_TYPEDEF (type
);
939 switch (current_language
->la_language
)
943 return (TYPE_CODE (type
) == TYPE_CODE_STRUCT
) ||
944 (TYPE_CODE (type
) == TYPE_CODE_UNION
) ||
945 (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
947 return (TYPE_CODE (type
) == TYPE_CODE_STRUCT
) ||
948 (TYPE_CODE (type
) == TYPE_CODE_SET
) ||
949 (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
951 error ("Missing Chill support in function structured_type."); /*FIXME */
963 switch (current_language
->la_language
)
966 return builtin_type_chill_bool
;
967 case language_fortran
:
968 sym
= lookup_symbol ("logical", NULL
, VAR_NAMESPACE
, NULL
, NULL
);
971 type
= SYMBOL_TYPE (sym
);
972 if (type
&& TYPE_CODE (type
) == TYPE_CODE_BOOL
)
975 return builtin_type_f_logical_s2
;
977 sym
= lookup_symbol ("bool", NULL
, VAR_NAMESPACE
, NULL
, NULL
);
980 type
= SYMBOL_TYPE (sym
);
981 if (type
&& TYPE_CODE (type
) == TYPE_CODE_BOOL
)
984 return builtin_type_bool
;
986 return builtin_type_int
;
990 /* This page contains functions that return info about
991 (struct value) values used in GDB. */
993 /* Returns non-zero if the value VAL represents a true value. */
998 /* It is possible that we should have some sort of error if a non-boolean
999 value is used in this context. Possibly dependent on some kind of
1000 "boolean-checking" option like range checking. But it should probably
1001 not depend on the language except insofar as is necessary to identify
1002 a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
1003 should be an error, probably). */
1004 return !value_logical_not (val
);
1007 /* Returns non-zero if the operator OP is defined on
1008 the values ARG1 and ARG2. */
1010 #if 0 /* Currently unused */
1013 binop_type_check (arg1
, arg2
, op
)
1014 value_ptr arg1
, arg2
;
1017 struct type
*t1
, *t2
;
1019 /* If we're not checking types, always return success. */
1023 t1
= VALUE_TYPE (arg1
);
1025 t2
= VALUE_TYPE (arg2
);
1033 if ((numeric_type (t1
) && pointer_type (t2
)) ||
1034 (pointer_type (t1
) && numeric_type (t2
)))
1036 warning ("combining pointer and integer.\n");
1042 if (!numeric_type (t1
) || !numeric_type (t2
))
1043 type_op_error ("Arguments to %s must be numbers.", op
);
1044 else if (!same_type (t1
, t2
))
1045 type_op_error ("Arguments to %s must be of the same type.", op
);
1048 case BINOP_LOGICAL_AND
:
1049 case BINOP_LOGICAL_OR
:
1050 if (!boolean_type (t1
) || !boolean_type (t2
))
1051 type_op_error ("Arguments to %s must be of boolean type.", op
);
1055 if ((pointer_type (t1
) && !(pointer_type (t2
) || integral_type (t2
))) ||
1056 (pointer_type (t2
) && !(pointer_type (t1
) || integral_type (t1
))))
1057 type_op_error ("A pointer can only be compared to an integer or pointer.", op
);
1058 else if ((pointer_type (t1
) && integral_type (t2
)) ||
1059 (integral_type (t1
) && pointer_type (t2
)))
1061 warning ("combining integer and pointer.\n");
1064 else if (!simple_type (t1
) || !simple_type (t2
))
1065 type_op_error ("Arguments to %s must be of simple type.", op
);
1066 else if (!same_type (t1
, t2
))
1067 type_op_error ("Arguments to %s must be of the same type.", op
);
1072 if (!integral_type (t1
) || !integral_type (t2
))
1073 type_op_error ("Arguments to %s must be of integral type.", op
);
1080 if (!ordered_type (t1
) || !ordered_type (t2
))
1081 type_op_error ("Arguments to %s must be of ordered type.", op
);
1082 else if (!same_type (t1
, t2
))
1083 type_op_error ("Arguments to %s must be of the same type.", op
);
1087 if (pointer_type (t1
) && !integral_type (t2
))
1088 type_op_error ("A pointer can only be assigned an integer.", op
);
1089 else if (pointer_type (t1
) && integral_type (t2
))
1091 warning ("combining integer and pointer.");
1094 else if (!simple_type (t1
) || !simple_type (t2
))
1095 type_op_error ("Arguments to %s must be of simple type.", op
);
1096 else if (!same_type (t1
, t2
))
1097 type_op_error ("Arguments to %s must be of the same type.", op
);
1101 /* FIXME: Needs to handle bitstrings as well. */
1102 if (!(string_type (t1
) || character_type (t1
) || integral_type (t1
))
1103 || !(string_type (t2
) || character_type (t2
) || integral_type (t2
)))
1104 type_op_error ("Arguments to %s must be strings or characters.", op
);
1107 /* Unary checks -- arg2 is null */
1109 case UNOP_LOGICAL_NOT
:
1110 if (!boolean_type (t1
))
1111 type_op_error ("Argument to %s must be of boolean type.", op
);
1116 if (!numeric_type (t1
))
1117 type_op_error ("Argument to %s must be of numeric type.", op
);
1121 if (integral_type (t1
))
1123 warning ("combining pointer and integer.\n");
1126 else if (!pointer_type (t1
))
1127 type_op_error ("Argument to %s must be a pointer.", op
);
1130 case UNOP_PREINCREMENT
:
1131 case UNOP_POSTINCREMENT
:
1132 case UNOP_PREDECREMENT
:
1133 case UNOP_POSTDECREMENT
:
1134 if (!ordered_type (t1
))
1135 type_op_error ("Argument to %s must be of an ordered type.", op
);
1139 /* Ok. The following operators have different meanings in
1140 different languages. */
1141 switch (current_language
->la_language
)
1145 case language_cplus
:
1149 if (!numeric_type (t1
) || !numeric_type (t2
))
1150 type_op_error ("Arguments to %s must be numbers.", op
);
1161 if (!float_type (t1
) || !float_type (t2
))
1162 type_op_error ("Arguments to %s must be floating point numbers.", op
);
1165 if (!integral_type (t1
) || !integral_type (t2
))
1166 type_op_error ("Arguments to %s must be of integral type.", op
);
1172 case language_chill
:
1173 error ("Missing Chill support in function binop_type_check."); /*FIXME */
1183 /* This page contains functions for the printing out of
1184 error messages that occur during type- and range-
1187 /* Prints the format string FMT with the operator as a string
1188 corresponding to the opcode OP. If FATAL is non-zero, then
1189 this is an error and error () is called. Otherwise, it is
1190 a warning and printf() is called. */
1192 op_error (fmt
, op
, fatal
)
1198 error (fmt
, op_string (op
));
1201 warning (fmt
, op_string (op
));
1205 /* These are called when a language fails a type- or range-check.
1206 The first argument should be a printf()-style format string, and
1207 the rest of the arguments should be its arguments. If
1208 [type|range]_check is [type|range]_check_on, then return_to_top_level()
1209 is called in the style of error (). Otherwise, the message is prefixed
1210 by the value of warning_pre_print and we do not return to the top level. */
1213 type_error (char *string
,...)
1216 va_start (args
, string
);
1218 if (type_check
== type_check_warn
)
1219 fprintf_filtered (gdb_stderr
, warning_pre_print
);
1223 vfprintf_filtered (gdb_stderr
, string
, args
);
1224 fprintf_filtered (gdb_stderr
, "\n");
1226 if (type_check
== type_check_on
)
1227 return_to_top_level (RETURN_ERROR
);
1231 range_error (char *string
,...)
1234 va_start (args
, string
);
1236 if (range_check
== range_check_warn
)
1237 fprintf_filtered (gdb_stderr
, warning_pre_print
);
1241 vfprintf_filtered (gdb_stderr
, string
, args
);
1242 fprintf_filtered (gdb_stderr
, "\n");
1244 if (range_check
== range_check_on
)
1245 return_to_top_level (RETURN_ERROR
);
1249 /* This page contains miscellaneous functions */
1251 /* Return the language enum for a given language string. */
1259 for (i
= 0; i
< languages_size
; i
++)
1260 if (STREQ (languages
[i
]->la_name
, str
))
1261 return languages
[i
]->la_language
;
1263 return language_unknown
;
1266 /* Return the language struct for a given language enum. */
1268 const struct language_defn
*
1274 for (i
= 0; i
< languages_size
; i
++)
1276 if (languages
[i
]->la_language
== lang
)
1278 return languages
[i
];
1284 /* Return the language as a string */
1291 for (i
= 0; i
< languages_size
; i
++)
1293 if (languages
[i
]->la_language
== lang
)
1295 return languages
[i
]->la_name
;
1302 set_check (ignore
, from_tty
)
1307 "\"set check\" must be followed by the name of a check subcommand.\n");
1308 help_list (setchecklist
, "set check ", -1, gdb_stdout
);
1312 show_check (ignore
, from_tty
)
1316 cmd_show_list (showchecklist
, from_tty
, "");
1319 /* Add a language to the set of known languages. */
1323 const struct language_defn
*lang
;
1325 if (lang
->la_magic
!= LANG_MAGIC
)
1327 fprintf_unfiltered (gdb_stderr
, "Magic number of %s language struct wrong\n",
1334 languages_allocsize
= DEFAULT_ALLOCSIZE
;
1335 languages
= (const struct language_defn
**) xmalloc
1336 (languages_allocsize
* sizeof (*languages
));
1338 if (languages_size
>= languages_allocsize
)
1340 languages_allocsize
*= 2;
1341 languages
= (const struct language_defn
**) xrealloc ((char *) languages
,
1342 languages_allocsize
* sizeof (*languages
));
1344 languages
[languages_size
++] = lang
;
1347 /* Define the language that is no language. */
1356 unk_lang_error (msg
)
1359 error ("Attempted to parse an expression with unknown language");
1363 unk_lang_emit_char (c
, stream
, quoter
)
1365 struct ui_file
*stream
;
1368 error ("internal error - unimplemented function unk_lang_emit_char called.");
1372 unk_lang_printchar (c
, stream
)
1374 struct ui_file
*stream
;
1376 error ("internal error - unimplemented function unk_lang_printchar called.");
1380 unk_lang_printstr (stream
, string
, length
, width
, force_ellipses
)
1381 struct ui_file
*stream
;
1383 unsigned int length
;
1387 error ("internal error - unimplemented function unk_lang_printstr called.");
1390 static struct type
*
1391 unk_lang_create_fundamental_type (objfile
, typeid)
1392 struct objfile
*objfile
;
1395 error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
1399 unk_lang_print_type (type
, varstring
, stream
, show
, level
)
1402 struct ui_file
*stream
;
1406 error ("internal error - unimplemented function unk_lang_print_type called.");
1410 unk_lang_val_print (type
, valaddr
, embedded_offset
, address
, stream
, format
, deref_ref
,
1414 int embedded_offset
;
1416 struct ui_file
*stream
;
1420 enum val_prettyprint pretty
;
1422 error ("internal error - unimplemented function unk_lang_val_print called.");
1426 unk_lang_value_print (val
, stream
, format
, pretty
)
1428 struct ui_file
*stream
;
1430 enum val_prettyprint pretty
;
1432 error ("internal error - unimplemented function unk_lang_value_print called.");
1435 static struct type
**CONST_PTR (unknown_builtin_types
[]) =
1439 static const struct op_print unk_op_print_tab
[] =
1441 {NULL
, OP_NULL
, PREC_NULL
, 0}
1444 const struct language_defn unknown_language_defn
=
1448 &unknown_builtin_types
[0],
1453 evaluate_subexp_standard
,
1454 unk_lang_printchar
, /* Print character constant */
1457 unk_lang_create_fundamental_type
,
1458 unk_lang_print_type
, /* Print a type using appropriate syntax */
1459 unk_lang_val_print
, /* Print a value using appropriate syntax */
1460 unk_lang_value_print
, /* Print a top-level value */
1461 {"", "", "", ""}, /* Binary format info */
1462 {"0%lo", "0", "o", ""}, /* Octal format info */
1463 {"%ld", "", "d", ""}, /* Decimal format info */
1464 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1465 unk_op_print_tab
, /* expression operators for printing */
1466 1, /* c-style arrays */
1467 0, /* String lower bound */
1468 &builtin_type_char
, /* Type of string elements */
1472 /* These two structs define fake entries for the "local" and "auto" options. */
1473 const struct language_defn auto_language_defn
=
1477 &unknown_builtin_types
[0],
1482 evaluate_subexp_standard
,
1483 unk_lang_printchar
, /* Print character constant */
1486 unk_lang_create_fundamental_type
,
1487 unk_lang_print_type
, /* Print a type using appropriate syntax */
1488 unk_lang_val_print
, /* Print a value using appropriate syntax */
1489 unk_lang_value_print
, /* Print a top-level value */
1490 {"", "", "", ""}, /* Binary format info */
1491 {"0%lo", "0", "o", ""}, /* Octal format info */
1492 {"%ld", "", "d", ""}, /* Decimal format info */
1493 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1494 unk_op_print_tab
, /* expression operators for printing */
1495 1, /* c-style arrays */
1496 0, /* String lower bound */
1497 &builtin_type_char
, /* Type of string elements */
1501 const struct language_defn local_language_defn
=
1505 &unknown_builtin_types
[0],
1510 evaluate_subexp_standard
,
1511 unk_lang_printchar
, /* Print character constant */
1514 unk_lang_create_fundamental_type
,
1515 unk_lang_print_type
, /* Print a type using appropriate syntax */
1516 unk_lang_val_print
, /* Print a value using appropriate syntax */
1517 unk_lang_value_print
, /* Print a top-level value */
1518 {"", "", "", ""}, /* Binary format info */
1519 {"0%lo", "0", "o", ""}, /* Octal format info */
1520 {"%ld", "", "d", ""}, /* Decimal format info */
1521 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1522 unk_op_print_tab
, /* expression operators for printing */
1523 1, /* c-style arrays */
1524 0, /* String lower bound */
1525 &builtin_type_char
, /* Type of string elements */
1529 /* Initialize the language routines */
1532 _initialize_language ()
1534 struct cmd_list_element
*set
, *show
;
1536 /* GDB commands for language specific stuff */
1538 set
= add_set_cmd ("language", class_support
, var_string_noescape
,
1540 "Set the current source language.",
1542 show
= add_show_from_set (set
, &showlist
);
1543 set
->function
.cfunc
= set_language_command
;
1544 show
->function
.cfunc
= show_language_command
;
1546 add_prefix_cmd ("check", no_class
, set_check
,
1547 "Set the status of the type/range checker",
1548 &setchecklist
, "set check ", 0, &setlist
);
1549 add_alias_cmd ("c", "check", no_class
, 1, &setlist
);
1550 add_alias_cmd ("ch", "check", no_class
, 1, &setlist
);
1552 add_prefix_cmd ("check", no_class
, show_check
,
1553 "Show the status of the type/range checker",
1554 &showchecklist
, "show check ", 0, &showlist
);
1555 add_alias_cmd ("c", "check", no_class
, 1, &showlist
);
1556 add_alias_cmd ("ch", "check", no_class
, 1, &showlist
);
1558 set
= add_set_cmd ("type", class_support
, var_string_noescape
,
1560 "Set type checking. (on/warn/off/auto)",
1562 show
= add_show_from_set (set
, &showchecklist
);
1563 set
->function
.cfunc
= set_type_command
;
1564 show
->function
.cfunc
= show_type_command
;
1566 set
= add_set_cmd ("range", class_support
, var_string_noescape
,
1568 "Set range checking. (on/warn/off/auto)",
1570 show
= add_show_from_set (set
, &showchecklist
);
1571 set
->function
.cfunc
= set_range_command
;
1572 show
->function
.cfunc
= show_range_command
;
1574 add_language (&unknown_language_defn
);
1575 add_language (&local_language_defn
);
1576 add_language (&auto_language_defn
);
1578 language
= savestring ("auto", strlen ("auto"));
1579 set_language_command (language
, 0);
1581 type
= savestring ("auto", strlen ("auto"));
1582 set_type_command (NULL
, 0);
1584 range
= savestring ("auto", strlen ("auto"));
1585 set_range_command (NULL
, 0);